no code implementations • 26 Sep 2023 • Zemin Zheng, Xin Zhou, Yingying Fan, Jinchi Lv
In this paper, we suggest a novel approach called high-dimensional manifold-based SOFAR inference (SOFARI), drawing on the Neyman near-orthogonality inference while incorporating the Stiefel manifold structure imposed by the SVD constraints.
no code implementations • 11 Apr 2021 • Ruipeng Dong, Daoji Li, Zemin Zheng
In this paper, we propose a scalable and computationally efficient procedure, called PEER, for large-scale multi-response regression with incomplete outcomes, where both the numbers of responses and predictors can be high-dimensional.
no code implementations • 17 Mar 2020 • Kun Chen, Ruipeng Dong, Wanwan Xu, Zemin Zheng
In the first stage of division, we consider both sequential and parallel approaches for simplifying the task into a set of co-sparse unit-rank estimation (CURE) problems, and establish the statistical underpinnings of these commonly-adopted and yet poorly understood deflation methods.
no code implementations • 7 Oct 2017 • Zemin Zheng, Jinchi Lv, Wei. Lin
A new methodology of nonsparse learning with latent variables (NSL) is proposed to simultaneously recover the significant observable predictors and latent factors as well as their effects.
no code implementations • 11 May 2016 • Yinfei Kong, Zemin Zheng, Jinchi Lv
An important question is whether this factor can be reduced to a logarithmic factor of the sample size in ultra-high dimensions under mild regularity conditions.
no code implementations • 11 May 2016 • Zemin Zheng, Yingying Fan, Jinchi Lv
In this paper, we consider sparse regression with hard-thresholding penalty, which we show to give rise to thresholded regression.
no code implementations • 5 Jan 2015 • Yingying Fan, Yinfei Kong, Daoji Li, Zemin Zheng
We propose a two-step procedure, IIS-SQDA, where in the first step an innovated interaction screening (IIS) approach based on transforming the original $p$-dimensional feature vector is proposed, and in the second step a sparse quadratic discriminant analysis (SQDA) is proposed for further selecting important interactions and main effects and simultaneously conducting classification.